unity3d Disable Grid

 using UnityEditor;
 using System;
 using System.Reflection;

 public class DisableGrid
 {
     [MenuItem("Window/Disable Grid")]
     static void DisableGridMenu()
     {
         Type AnnotationUtility = Type.GetType("UnityEditor.AnnotationUtility, UnityEditor");
         var showGrid = AnnotationUtility.GetProperty("showGrid",
             BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static);
         showGrid.SetValue(null, false, null);
     }
 }